Storage Mirroring. Moving to x64 platform

[BenWilliamsHP]

We have been successfully running Storage Mirroring 4.5 on Windows Server 2003 (32bit) but have now upgraded the server to Windows Server 2008 x64 and installed Storage Mirroring 5.2. Previously, when upgrading the Storage Mirroring software from 4.5 to 5.2 on 2003 32bit platforms the activation key was successful.

However, a fresh install of 5.2 on x64 Windows server 2008 the activation key is not recognised. Does anyone know if 5.2 is compatible with 2008 x64 (it installed fine) and whether the activation keys are interoperable?